bankoperation.java

JAVA的银行系统。采用java语言编写。有简单的功能

package Bank;

import java.util.Random;

public class BankOperation{
    public static void main(String[] args){
		int initialBalance = 500;		//The initial account balance 初始化帐户余额
		int totalCredits = 0;			//Total credits on the account帐户上的存款总额
		int totalDebits = 0;			//Total debits on the account 帐户上的借款总额
		int transactionCount = 20;		//Number of debits and credits存款、借款总数
	
		//Create the account, the bank, and the clerks...创建银行、帐户、职员
	    Bank theBank = new Bank();							//Create a bank 创建银行
	    Clerk clerk1 = new Clerk(theBank);					//Create the first clerk 借款业务的职员
	    Clerk clerk2 = new Clerk(theBank);					//Create the second clerk存款业务的职员
	    Account account = new Account(1,initialBalance);	//Create an account  账户
	
		//Create the threads for the clerks as daemon, and start them off 添加创建职员线程，并启动线程的代码
	    Thread clerk1Thread = new Thread(clerk1);
	    Thread clerk2Thread = new Thread(clerk2);
	    clerk1Thread.setDaemon(true);		//set first as daemon 守护线程
	    clerk2Thread.setDaemon(true);		//set second as daemon
	    clerk1Thread.start();				//Start the first 启动线程
	    clerk2Thread.start();				//Start the second
	
		//Generate the transactions of each type and pass to the clerks		(顾客办理业务)
	    Random rand = new Random();			//Random number generator
	    Transaction transaction;			//Stores a transaction
	    int amount = 0;						//Stores an amount of money初始化交易数额
	    
		for(int i =1;i<= transactionCount; i++){ 
			/*存款交易*/
			amount = 50 + rand.nextInt(26);				//Generate amount of $50 to $75   动态生成交易总额，50-76
			transaction = new Transaction(account,		//Account
						      Transaction.CREDIT,		//Credit transaction 存款 transaction
						      amount);					//of amount	交易总额
			totalCredits += amount;						//Keep total credit tally 重置存款总额
		
			    //Wait until the first clerk is free 等待，直到clerk1空闲
			while(clerk1.isBusy()){
			    try{
				Thread.sleep(25);						//Busy to try later
		
			    }catch(InterruptedException e){
			        System.out.println(e);
			    }
		  	}
			clerk1.doTransaction(transaction);			//Now do the credit 处理存款业务
		
			
			/*取款交易*/
			amount = 30 + rand.nextInt(31);				//Generate amount of $30 to $60    动态生成交易总额，30-60
			transaction = new Transaction(account,		//Account transaction 
						      Transaction.DEBIT,		//Debit 取款 transaction
						      amount);					//of amount
			totalDebits +=amount;						//重置借款总额
		
			    //Wait until the second clerk is free 等待，直到clerk2空闲
			while(clerk2.isBusy()){
			    try{
				Thread.sleep(25);						//Busy so try later
		
			    }catch(InterruptedException e){
			        System.out.println(e);
			    }
			}
			clerk2.doTransaction(transaction);			//Now do the credit 处理借款业务
			
		}
	
		//Wait until both clerks are done  等待，直到clert1和clerk2都空闲，处理业务完毕
	    while(clerk1.isBusy() || clerk2.isBusy()){
			try{
			    Thread.sleep(25);
		
		    }catch(InterruptedException e){
			    System.out.println(e);
			}
	    }
	    
	    //一旦所有的事务处理完毕，就应该输出结果。
	    //但是，程序从循环退出时，职员可能仍然很忙，因此需要等待2个职员空闲后才能输出结果。
		//Now output the results 最后，输出结果
	    System.out.println(
	        "Original balance 初始余额 : $"+ initialBalance +"\n" +
	        "Tolal credits    存款总数 : $"+ totalCredits +"\n" +
	        "Total debits     借款总数 : $"+ totalDebits +"\n" +
	        "Final balance    帐户余额 : $"+ account.getBalance() +"\n" +
	        "Should be        应该余额 : $"+(initialBalance + totalCredits - totalDebits)
	    );
	    
    }
}